Cynthia Galens, has been found guilty of manslaughter in death of her boyfriend, who drank a jug of margaritas laced with antifreeze at their apartment in western New York.

Air Force veteran Thomas Stack died last year from complications of ethylene glycol poisoning.

Cynthia Galens was convicted of first-degree manslaughter Thursday after a four-day trial. The 52-year-old Galens faces five to 25 years in prison at sentencing scheduled for Nov. 10.

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Investigators say Galens told them Stack was emotionally and physically abusive and she decided to exact revenge by pouring a shot glass of the toxic chemical into a margarita mix. Stack died four days later.
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